A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5945-01-186-8072
NSN 6110-01-389-3191
NSN 5965-01-455-3738
NSN 6685-01-216-0948
NSN 5990-01-078-1294
NSN 5945-01-160-7894
NSN 6620-00-043-6082
NSN 4140-01-182-5861
NSN 4140-00-020-1835
NSN 6220-01-411-5629
NSN 5950-00-076-4033
NSN 5998-00-929-6928